Colour
#CA2F25
- #CA2F25
- Red
- Dark
- Nearest: Firebrick
#CA2F25 is a red with RGB values 202, 47, 37 and HSL 4°, 69%, 47%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#CA2F25#CA2F25
HEX#CA2F25
RGBrgb(202, 47, 37)
RGB (0–1)0.7922, 0.1843, 0.1451
RGB percentages79.2%, 18.4%, 14.5%
HSLhsl(3.6, 69%, 46.9%)
HSV / HSBhsv(3.6, 81.7%, 79.2%)
CMYK0%, 76.7%, 81.7%, 20.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,250,341
CSS custom property--colour: #CA2F25;
Brightness & contrast
Relative luminance0.14723WCAG 2.x, 0 is black and 1 is white
Perceived brightness116.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.32:1
Contrast with white5.32:1WCAG normal text: AA
Contrast with black3.94:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#35D0DA
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.32:1WCAG large text: AAA
Contrast with black, large text3.94:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#25C0CA
Analogous#CA256E, #CA8125
Triadic#25CA2F, #2F25CA
Split complementary#25CA82, #256ECA
Tetradic#6ECA25, #25C0CA, #8225CA
Tints, shades & saturation
Channel breakdown
R202
G47
B37
Red202 (79.2%)
Green47 (18.4%)
Blue37 (14.5%)
Hue3.64°
Saturation (HSL)69.04%
Lightness46.86%
Dominant channelRed
Hex per channelR CA · G 2F · B 25
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Also reads as
Ca2F25 (chemical formula)
- Formula
- 555.106 g/mol
- 27 atoms
Ca2F25 has a molar mass of 555.106 g/mol, made up of 27 atoms across 2 elements: 2 × Ca, 25 × F.
Molar mass
Molar mass555.106 g/mol
Total atoms per molecule27
Distinct elements2
Mass of one molecule9.217752 × 10^-22 g
Molecules per gram1.0848632 × 10^21
Composition by mass
Ca14.4%
F85.6%
Calcium (Ca × 2)80.156 g/mol, 14.44%
Fluorine (F × 25)474.95 g/mol, 85.56%
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